ES 24A Electric Steam Generator
Installation, Operation and Maintenance Manual
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5
Blowdown is an essential part of boiler operation. It is one of the best preventative maintenance steps you
can take. Make sure a blowdown schedule is established and followed regularly.
In hard water areas, blowdown is necessary at least once a day. In soft water areas, once a week. If there
is a particular problem which applies to your own local water condition other than mineral content, take
this into consideration in determining whichschedule is to be followed.
1.
At the end of the working day, while boiler is still operating, turn switch to the OFF position and close
water supply valve. De-energize wall mounted safety switch.
2.
It is preferable to connect the blowdown valve directly into a drainage system when allowed by local
codes. If this is done, the boiler can be discharged at operating pressure. Consult local plumbing codes
before doing so.
3.
If blowing-down into a receptacle, allow pressure to decrease to 15-20 PSIG before opening blow-
down valve.
4.
When discharge is complete and boiler is drained:
1.
Close the blowdown valve
3.
Put boiler switch in the ON position
2.
Open water supply valve;
4.
Close wall mounted safety switch.
5.
When refilling is complete, turn off the boiler switch unless further operation is desirable.
6.
If you have been supplied with a Manual Reset Low Water Control as required in some states, the
reset button on the control must be pushed before boiler will begin developing pressure. (Do not push
reset until boiler has filled with water.)
HAZARD OF ELECTRICAL SHOCK. DISCONNECT ALL POWER BEFORE
WORKING ON BOILER.
Sussman Electric Steam boilers are designed for years of trouble-free performance. To establish a good
preventative maintenance program, we suggest that the building maintenance person or engineer famil-
iarize themselves with these simple rules.
1.
The sight glass should be checked daily to ensure that boiler has adequate water.
2.
A monthly inspection should be made of the internal wiring. All electrical connections should be
checked for tightness. A check for water leaks should also be made and any loose fittings immediately
tightened.
3.
Every four months, the low water cut-off and pump control should be checked to insure that it is func-
tioning properly.
4.
Every four months, the probe and isolator should be checked for deposits and cleaned, if necessary.
This is accomplished by removing the inspection plate, removing the probe (with a standard socket
wrench) cleaning and replacing.
5.
Every four months, the heating elements should be removed. If scale has begun to form, the element
should be cleaned and the boiler should be drained and flushed.
NOTE: NEW BOLTS AND GASKET SHOULD BE USED WHEN RE-INSTALLING THE
ELEMENT TO ASSURE PROPER SEALING.
Blowdown
Maintenance
!
CAUTION